Rutja PhuphaibulChuenreudee KongsaktrakulSrisamon PhusamonNoppawan PeasueLadda MosuwanChanpen ChoprapawonMahidol UniversityFaculty of Medicine, Thammasat UniversityThailand Research Association for Child and Family Development2018-11-092018-11-092014-01-01Japan Journal of Nursing Science. Vol.11, No.1 (2014), 16-2217427924174279322-s2.0-84893649215https://repository.li.mahidol.ac.th/handle/20.500.14594/34896Aim: The present study is based on the Prospective Cohort Study of Thai Children (PCTC), and focuses on socioeconomic factors including maternal age, maternal education, living with parents, family size, family income, locality, and sex that affect the growth outcomes of infants at 1year of age. Methods: Data was collected among 3679 pairs of mothers and infants in the PCTC cohort in rural and urban locations during 2001-2002. Data collection was performed by interviewing mothers in their 7th to 8th month of pregnancy using family profile questionnaires. The anthropometric measures including weight, length, and head circumference of the infants were later collected at 1year of age at home. Results: The results show the effects of family socioeconomic status maternal education, living with parents, family size, family income, locality, and sex on their weight (R2=14.2%, P<0.001) and length (R2=8.7%, P<0.001) at 1year of age. The findings suggest that maternal age, maternal education, living with parents, family size, family income, locality, and sex predict infant head circumference (R2=16.8%, P<0.001) at 1year of age. Conclusion: Infants' growth, including weight, height, and head circumference, are affected by family socioeconomic status factors. It is recommended that the effect of maternal age on growth and development of children among those in the PCTC cohort is examined in the future. © 2012 Japan Academy of Nursing Science.Mahidol UniversityNursingArticleSCOPUS10.1111/j.1742-7924.2012.00225.x